Android ScrollView vs NestedScrollView

Question

What is the difference between ScrollView and NestedScrollView  Both of them  extend FrameLayout  I want to know in depth pros and cons of both of them

User · Answer

NestedScrollView     NestedScrollView is just like ScrollView  but it supports acting as   both a nested scrolling parent and child on both new and old versions   of Android   Nested scrolling is enabled by default    https   developer android com reference android support v4 widget NestedScrollView html  ScrollView     Layout container for a view hierarchy that can be scrolled by the   user  allowing it to be larger than the physical display   A   ScrollView is a FrameLayout  meaning you should place one child in it   containing the entire contents to scroll   this child may itself be a   layout manager with a complex hierarchy of objects   https   developer android com reference android widget ScrollView html

User · Answer

NestedScrollView is just like ScrollView  but in NestedScrollView we can put other scrolling views as child of it  e g  RecyclerView   But if we put RecyclerView inside NestedScrollView  RecyclerView s smooth scrolling is disturbed  So to bring back smooth scrolling there s trick   ViewCompat setNestedScrollingEnabled recyclerView  false     put above line after setting adapter for recyclerView

User · Answer

I think one Benefit of using Nested Scroll view is that the cooridinator layout  only listens for nested scroll events  So if for ex  you want the toolbar to scroll down when you scroll you content of activity  it will only scroll down when you are using nested scroll view in your layout  If you use a normal scroll view in your layout  the toolbar wont scroll when the user scrolls the content

User · Answer

Other than the advantages listed in the answers given  one more advantage of NestedScrollView over ScrollView is its compatibility with CoordinatorLayout  The ScrollView does not cooperate with the CoordinatorLayout  You have to use NestedScrollView to get  scroll off-screen  behaviour for the toolbar   Toolbar will not collapse with Scrollview as child of CoordinatorLayout

User · Answer

In addition to the nested scrolling NestedScrollView added one major functionality  which could even make it interesting outside of nested contexts  It has build in support for OnScrollChangeListener  Adding a OnScrollChangeListener to the original ScrollView below API 23 required subclassing ScrollView or messing around with the ViewTreeObserver of the ScrollView which often means even more work than subclassing  With NestedScrollView it can be done using the build-in setter

User · Answer

NestedScrollView as the name suggests is used when there is a need for a scrolling view inside another scrolling view  Normally this would be difficult to accomplish since the system would be unable to decide which view to scroll   This is where NestedScrollView comes in

[android] Android: ScrollView vs NestedScrollView

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